Data:10 60/PD Presentation

X₄₂₅₁ X_10,6,11,5 X₈₃₉₄ X_2,9,3,10 X_16,12,17,11 X_14,7,15,8 X_6,15,7,16 X_20,18,1,17 X_18,13,19,14 X_12,19,13,20